diff --git a/net/loveruby/cflat/compiler/Compiler.java b/net/loveruby/cflat/compiler/Compiler.java
index 540347f..a1b40db 100644
--- a/net/loveruby/cflat/compiler/Compiler.java
+++ b/net/loveruby/cflat/compiler/Compiler.java
@@ -144,12 +144,15 @@ public class Compiler {
         return opts.codeGenerator(errorHandler).generate(ir);
     }
 
+    // #@@range/assemble{
     public void assemble(String srcPath, String destPath,
                             Options opts) throws IPCException {
         opts.assembler(errorHandler)
             .assemble(srcPath, destPath, opts.asOptions());
     }
+    // #@@}
 
+    // #@@range/link{
     public void link(Options opts) throws IPCException {
         if (! opts.isGeneratingSharedLibrary()) {
             generateExecutable(opts);
@@ -158,16 +161,21 @@ public class Compiler {
             generateSharedLibrary(opts);
         }
     }
+    // #@@}
 
+    // #@@range/generateExecutable{
     public void generateExecutable(Options opts) throws IPCException {
         opts.linker(errorHandler).generateExecutable(
                 opts.ldArgs(), opts.exeFileName(), opts.ldOptions());
     }
+    // #@@}
 
+    // #@@range/generateSharedLibrary{
     public void generateSharedLibrary(Options opts) throws IPCException {
         opts.linker(errorHandler).generateSharedLibrary(
                 opts.ldArgs(), opts.soFileName(), opts.ldOptions());
     }
+    // #@@}
 
     private void writeFile(String path, String str) throws FileException {
         if (path.equals("-")) {
diff --git a/net/loveruby/cflat/sysdep/GNUAssembler.java b/net/loveruby/cflat/sysdep/GNUAssembler.java
index 633bc8b..42a5a33 100644
--- a/net/loveruby/cflat/sysdep/GNUAssembler.java
+++ b/net/loveruby/cflat/sysdep/GNUAssembler.java
@@ -12,6 +12,7 @@ class GNUAssembler implements Assembler {
         this.errorHandler = h;
     }
 
+    // #@@range/assemble{
     public void assemble(String srcPath, String destPath,
                             AssemblerOptions opts) throws IPCException {
         List<String> cmd = new ArrayList<String>();
@@ -22,4 +23,5 @@ class GNUAssembler implements Assembler {
         cmd.add(srcPath);
         CommandUtils.invoke(cmd, errorHandler, opts.verbose);
     }
+    // #@@}
 }
diff --git a/net/loveruby/cflat/sysdep/x86/CodeGenerator.java b/net/loveruby/cflat/sysdep/x86/CodeGenerator.java
index a1d046e..cfcdca3 100644
--- a/net/loveruby/cflat/sysdep/x86/CodeGenerator.java
+++ b/net/loveruby/cflat/sysdep/x86/CodeGenerator.java
@@ -152,6 +152,7 @@ public class CodeGenerator implements net.loveruby.cflat.sysdep.CodeGenerator,
         if (ir.isFunctionDefined()) {
             generateTextSection(file, ir.definedFunctions());
         }
+        // #@@range/generateAssemblyCode_last{
         if (ir.isCommonSymbolDefined()) {
             generateCommonSymbols(file, ir.definedCommonSymbols());
         }
@@ -159,6 +160,7 @@ public class CodeGenerator implements net.loveruby.cflat.sysdep.CodeGenerator,
             PICThunk(file, GOTBaseReg());
         }
         return file;
+        // #@@}
     }
     // #@@}
 
@@ -266,19 +268,18 @@ public class CodeGenerator implements net.loveruby.cflat.sysdep.CodeGenerator,
     // PIC/PIE related constants and codes
     //
 
-    // #@@range/pic_methods{
-    static private final Symbol GOT =
-            new NamedSymbol("_GLOBAL_OFFSET_TABLE_");
+    // #@@range/loadGOT{
+    static private final Symbol GOT = new NamedSymbol("_GLOBAL_OFFSET_TABLE_");
 
     private void loadGOTBaseAddress(AssemblyCode file, Register reg) {
         file.call(PICThunkSymbol(reg));
         file.add(imm(GOT), reg);
     }
+    // #@@}
 
     private Register GOTBaseReg() {
         return bx();
     }
-    // #@@}
 
     // #@@range/pic_symbols{
     private Symbol globalGOTSymbol(Symbol base) {
@@ -294,16 +295,16 @@ public class CodeGenerator implements net.loveruby.cflat.sysdep.CodeGenerator,
     }
     // #@@}
 
-    // #@@range/pic_thunk_helper{
+    // #@@range/PICThunkSymbol{
     private Symbol PICThunkSymbol(Register reg) {
         return new NamedSymbol("__i686.get_pc_thunk." + reg.baseName());
     }
+    // #@@}
 
     static private final String
     PICThunkSectionFlags = SectionFlag_allocatable
                          + SectionFlag_executable
                          + SectionFlag_sectiongroup;
-    // #@@}
 
     /**
      * Output PIC thunk.